import fetch from 'dva/fetch';
import { notification,message } from 'antd';
import { routerRedux } from 'dva/router';
import { startsWith, mapValues } from 'lodash';
import moment from 'moment';

const codeMessage = {
  200: '服务器成功返回请求的数据。',
  201: '新建或修改数据成功。',
  202: '一个请求已经进入后台排队（异步任务）。',
  204: '删除数据成功。',
  400: '发出的请求有错误，服务器没有进行新建或修改数据的操作。',
  401: '用户没有权限（令牌、用户名、密码错误）。',
  403: '用户得到授权，但是访问是被禁止的。',
  404: '发出的请求针对的是不存在的记录，服务器没有进行操作。',
  406: '请求的格式不可得。',
  410: '请求的资源被永久删除，且不会再得到的。',
  422: '当创建一个对象时，发生一个验证错误。',
  500: '服务器发生错误，请检查服务器。',
  502: '网关错误。',
  503: '服务不可用，服务器暂时过载或维护。',
  504: '网关超时。',
};
function checkStatus(response) {
  if (response.status >= 200 && response.status < 300) {
    return response;
  }
  if (response.status === 411) {
    //debugger;
    response.json().then(value => {
      //debugger;
      const errortext = value.msg;
      notification.error({
        message: `${errortext}`,
        //description: errortext,
      });
      const error = new Error(errortext);
      error.name = response.status;
      error.response = response;
      throw error;
    });
  } else {
    const errortext = codeMessage[response.status] || response.statusText;
    notification.error({
      message: `请求错误 ${response.status}: ${response.url}`,
      description: errortext,
    });
    const error = new Error(errortext);
    error.name = response.status;
    error.response = response;
    throw error;
  }
}

/**
 * Requests a URL, returning a promise.
 *
 * @param  {string} url       The URL we want to request
 * @param  {object} [options] The options we want to pass to "fetch"
 * @return {object}           An object containing either "data" or "err"
 */
export default function request(url, options) {
  const loginFlag = localStorage.getItem('loginFlag')
  const defaultOptions = {
    credentials: 'include',
    
  };
  const newOptions = { ...defaultOptions, ...options };
  if (
    newOptions.method === 'POST' ||
    newOptions.method === 'PUT' ||
    newOptions.method === 'PATCH' ||
    newOptions.method === 'DELETE'
  ) {
    if (!(newOptions.body instanceof FormData)) {
      newOptions.headers = {
        Accept: 'application/json',
        'Content-Type': 'application/json; charset=utf-8',
      };

      const convertedBody = mapValues(newOptions.body, value => {
        if (value instanceof moment) {
          return value.format('YYYY-MM-DD HH:mm:ss');
        } else {
          return value;
        }
      });

      newOptions.body = JSON.stringify(convertedBody);
    } else {
      // newOptions.body is FormData
      newOptions.headers = {
        Accept: 'application/json',
      };
    }
  }

  if(loginFlag){
    
    newOptions.headers = {
      ...newOptions.headers,
      Authorization : 'Bearer '+loginFlag,
    };
  }

  if (!startsWith(url, '/api')) {
    url = window.path_prefix + url;
  }

  let current;
  let pageSize;
  let total;

  return fetch(url, newOptions)
    .then(checkStatus)
    .then(response => {
      current = response.headers.get('x-current-page')
      pageSize = response.headers.get('x-page-size')
      total = response.headers.get('x-total-count')
      return response.json().catch(err => {
        //message.success('操作執行成功')
        return {};
      });
      
    }).then(datas => {
        if(datas && current && pageSize && total){
          const pagination = {
            hideOnSinglePage:true,
            pageSize:Number(pageSize),
            current:Number(current),
            total:Number(total)}
          return {pagination, list:datas}
        }else{
          return datas;
        }
      }
    )
    .catch(e => {
      const status = e.name;
      if (status === 401) {
        localStorage.setItem('loginFlag',null)
        setTimeout(() => {
          window.g_app._store.dispatch({
            type: 'login/logout',
          });
        }, 2000);
        return;
      }
      console.error('调用接口报错，接口：%s', url, 'options: ', newOptions);
      //throw e;
    });
}
